Retention indices in micellar electrokinetic chromatography

The use o f retent ion indices in mice l la r electrokinet ic ch roma tog raphy ( M E K C ) is eva lua ted both f rom a theoretical and a practical point o f view. F undamen t a l equa t ions for the de te rmina t ion o f retent ion indices in M E K C are descr ibed, showing that re tent ion indices are independen t o f the surfac tant concentra t ion. Possibi l i t ies as well as l imita t ions o f different h o m o l o g o u s series as re ference s tandards are described. In addition, the practical appl icat ion o f retent ion indices for identif ication, inves t iga t ion o f s o l u t e m i c e l l e interact ions, character izat ion and classif icat ion of pseudo-s ta t ionary phases and de te rmina t ion o f solute l ipophil ici ty are d iscussed . © 1997 Elsevier Science B.V.